scripts: gen_syscalls: declare syscalls with void instead of zero args
In C, `void foo(void);` and `void foo();` mean subtly different things.
The former means "foo takes zero arguments"; the latter means
"foo takes an unspecified number of arguments". This can result in
calling convention mismatches in exceptional cases.
Change to emitting `(void)` instead of `()` for a syscall with
zero arguments.
Signed-off-by: James Harris <james.harris@intel.com>
diff --git a/scripts/gen_syscalls.py b/scripts/gen_syscalls.py
index 6d18cf9..95cd8c1 100755
--- a/scripts/gen_syscalls.py
+++ b/scripts/gen_syscalls.py
@@ -168,7 +168,7 @@
if ret64:
mrsh_args.append("(uintptr_t)&ret64")
- decl_arglist = ", ".join([" ".join(argrec) for argrec in args])
+ decl_arglist = ", ".join([" ".join(argrec) for argrec in args]) or "void"
wrap = "extern %s z_impl_%s(%s);\n" % (func_type, func_name, decl_arglist)
wrap += "static inline %s %s(%s)\n" % (func_type, func_name, decl_arglist)
